On-site mobile concrete production · Discharge versus drum volume, batches per hour, weighing accuracy against batching tolerances, water tank, discharge time, travel and climbing
A self-loading concrete mixer is a wheeled machine with a loading bucket and a rotating mixing drum that loads aggregate and cement itself, weighs them, adds water, mixes, travels to the pour and discharges, all with one operator. Ask three things first: how much concrete it discharges per batch and per hour, how accurately it weighs each ingredient against your project's batching tolerances, and how travel time and discharge limits fit the site.
Self-loading mobile concrete mixers with bucket loading, onboard weighing and rotating or slewing drums. Truck-mounted transit mixers, volumetric mixer trucks, stationary batching plants and concrete pumps are outside this page except where compared.
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01
Aimix lists its AS-3.5 self-loading mixer at a discharge capacity of 3,500 L (3.5 m³) per batch from a 4,740 L mixing drum, a concrete output of 14 m³/h, a 620 L water tank (800 L option), 8,000 kg total weight, 91 kW engine, 4×4 drive with hydrostatic transmission, 30° maximum climbing and 0–35 km/h travel; it combines loading, weighing, mixing, transport and discharge in one machine with one operator. [1]
Qingdao Promising lists its CML160 small mixer at 2.2 m³ geometric and 1.6 m³ actual mixing volume, under 0.8% residual volume, about 6 m³ an hour with up to four batches an hour, a 0.35 m³ loading bucket with hydraulic gate, three drum speeds forward and reverse, a 60 kW engine, 0–9.5 and 0–25 km/h travel, 180 L fuel and 430 L water tanks, and options such as a slewing drum with 270° discharge and electronic weighing. [2]
Editorial calculation: discharge is about 74% of drum volume on both machines (3.5 / 4.74 ≈ 0.74; 1.6 / 2.2 ≈ 0.73), and the AS-3.5's 14 m³/h at 3.5 m³ per batch implies 4 batches an hour, similar to the CML160's 4 × 1.6 = 6.4 m³/h; compare machines on discharge volume and batch cycle, not drum size. [1] [2]
Give the supplier the concrete classes and mix designs, daily volume, haul distance and gradients on site, aggregate and cement storage, water source, weighing and printout requirements, operator training, emission standard, and the specification the concrete must meet.
02
Aimix states that its weighing system has a measurement error of less than 2%. [1] Texas DOT's 2024 Item 421 sets batching tolerances for non-volumetric mixers of −1% to +3% for cement and SCM, ±2% for each aggregate, ±3% for water and admixtures, requires every mixer to carry a plate with the manufacturer's operating speed and rated capacity for mixing and agitating, and requires the drum to be turned at least 30 more revolutions at mixing speed after water is added at the job site. [3]
Item 421 Table 14 sets maximum times from batching to the start of discharge for truck mixers: 45 minutes (75 with Type B or D admixtures) at 90 °F or above, 60 (90) minutes at 75–90 °F and 90 (120) minutes below 75 °F, extendable only with slump-loss testing. [3]
Editorial note: a single 'under 2%' figure does not show which ingredient it applies to; ask the supplier for weighing accuracy per material, the batch printout, and how the machine's data would be accepted under your project's specification.
03
FIORI GROUP's page for its DB 460 self-loading concrete mixer lists a capacity of 4.0 m³, reversible drive, four-wheel drive and four-wheel steering, a drum lifting system, and a patented drum rotation that gives 360° unloading with rotation up to 245°, so the operator can watch the mix from the cab. The double-cone drum has a double mixing screw and convex bottom, and a pressure sensor on the drum reducer supplies the data used to control the expected slump. The cab is heated, enclosed, mounted on silent blocks and ROPS/FOPS certified, and a ground-level panel controls water, mixing, unloading and the chute. Its optional CBV (Concrete Batching Vehicle) system stores multiple recipes in an on-board computer, guides the operator through the mix design, compensates the added water for the moisture in the aggregates to hold the water/cement ratio, and issues a final report on the concrete produced. [4]
Editorial calculation: 4.0 m³ is about 14% more per batch than the 3.5 m³ discharge Aimix lists for its AS-3.5. Where concrete must meet a specification such as TxDOT Item 421, ask whether the machine records each batch, how aggregate moisture is measured and corrected, and whether its batch report can show the weights against the allowed batching tolerances. [4] [1] [3]
| Feature | DB 460 published detail | What to confirm |
|---|---|---|
| Capacity | 4.0 m³ [4] | Discharge vs drum volume. |
| Drum rotation and unloading | 360° unloading; rotation up to 245° [4] | Reach at your pours. |
| Slump monitoring | Pressure sensor on drum reducer [4] | Slump calibration. |
| Batching control (CBV) | Recipes; moisture compensation; final report [4] | Batch records for your spec. |
| Cab | Heated, enclosed, ROPS/FOPS certified [4] | Certificates. |
04
The suppliers reviewed list self-loading mixers in a range of sizes; ask each for discharge volume per batch, drum geometric volume, batches per hour, weighing method and accuracy per material, water metering, engine and emission stage, drive and climbing ability.
05
The capacity plate is the one part here taken from the Texas specification rather than a maker's sheet: Item 421 requires every mixer to carry one.
| Part | Role | Fix in the order |
|---|---|---|
| Loading bucket | Loads aggregate and cement. [2] | Capacity; gate. |
| Weighing system | Measures each load. [1] [2] | Accuracy; printout. |
| Mixing drum | Mixes and discharges. [1] [2] | Volume; speeds; slewing. |
| Water tank and meter | Adds water. [1] [2] | Volume; metering. |
| Engine and hydrostatic drive | Travel and hydraulics. [1] [2] | Power; speeds. |
| Capacity plate | Rated speed and capacity. [3] | Fitted. |
06
State drum capacity as both geometric and discharge volume, since the reviewed makers list the two separately. Discharge height, IP rating and drum material are not given in the sources on this page and have to be asked for.
| Field | What it means and published values | Ask the supplier for |
|---|---|---|
| Drum Capacity (cubic meters) | Geometric vs discharge, e.g. 4.74 / 3.5 m³. [1] | Both volumes. |
| Engine Power (kilowatts) | E.g. 60–91 kW. [2] [1] | Power; emissions. |
| Loading Bucket Capacity (m³) | Bucket, e.g. 0.35 m³. [2] | Bucket volume and load. |
| Water Tank Capacity (liters) | E.g. 430–620 L. [2] [1] | Volume; metering. |
| Travel Speed (kilometers per hour) | E.g. 0–25 or 0–35 km/h. [2] [1] | Speeds. |
| Mixing Drum Speed (r/min) | Plate must show mixing speed. [3] | Speeds. |
| Discharge Height (mm) | Chute height. | Height; slewing. |
| Operating Temperature (°C) | Hot weather discharge limits. [3] | Range. |
| IP Rating | Electrics and weighing. | Rating. |
| Mixing Drum Material | Wear resistance. | Steel and thickness. |
| Total Weight (kg) | E.g. 8,000 kg. [1] | Weight. |
07
Paste it into your enquiry below or into an email to a maker, then replace every bracket.
Concrete: [classes; mix designs] Volume: [m³/day; batch size] Site: [haul distance; gradients; access] Materials: [aggregate and cement storage; water] Weighing: [accuracy per material; printouts] Specification: [tolerances; discharge times] Machine: [engine; drive; options]
AIMIX Group lists its AS-series self-loading mixers; Jining SAAO Machinery Manufacturing Co., Ltd., Raiso Heavy Industry Machinery Co., Ltd. and Saintyol DAWIN Machinery show them next to loaders, excavators or concrete pumps.
Lists AS-series self-loading concrete mixers.
Product scope checked 2026-10-11
Lists self-loading mixer trucks with loaders and excavators.
Product scope checked 2026-10-11
Lists self-loading concrete mixers with wheel and backhoe loaders.
Product scope checked 2026-10-11
Lists self-loading concrete mixers with concrete pumps and mixers.
Product scope checked 2026-10-11
Lists concrete self-loading mixer trucks with mobile crushers.
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Explore company information and manufacturing capabilities, then discuss the scope of your project with a relevant supplier.
Aimix lists 14 m³/h for its 3.5 m³ AS-3.5; Promising lists about 6 m³/h for its 1.6 m³ CML160. [1] [2]
Makers list both: 4,740 L drum for 3.5 m³ discharge (Aimix) and 2.2 m³ geometric for 1.6 m³ mixing volume (Promising). [1] [2]
Texas DOT Item 421 limits time from batching to discharge to 45–90 min without retarding admixtures, depending on temperature. [3]
One maker's on-board batching option stores recipes and compensates the added water for aggregate moisture to hold the water/cement ratio, then issues a batch report. [4]
Sources checked 2026-10-12. Aimix and Qingdao Promising describe their own machines; Texas DOT's Item 421 is a state highway specification for concrete. Rules for your project come from its own specification.
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